Question
| Process | Ores |
| i. Hydraulic process | (a) $ZnS$ |
| ii. Magnetic separation | (b) $Fe _2 O _3$ |
| iii. Froth floatation process | (c) $SnO _2$ |
| iv. Leaching process | (d) $Al _2 O _3 \cdot 2 H _2 O$ |
| Process | Ores |
| i. Hydraulic process | (a) $ZnS$ |
| ii. Magnetic separation | (b) $Fe _2 O _3$ |
| iii. Froth floatation process | (c) $SnO _2$ |
| iv. Leaching process | (d) $Al _2 O _3 \cdot 2 H _2 O$ |
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
| Compound | Common Name | IUPAC Name |
| $CH _2= CH _2$ | Acetylene | Butane |
| $CH _3- C \equiv C - CH _3$ | n-butane | Ethene |
| $CH _3- CH _2- CH _2- CH _3$ | Dimethyl acetylene | Ethyne |
| CH≡CH | Ethylene | 2 – butyne |
| 1. Uranium core bomb | (a) fusion bomb |
| 2. Plutonium core bomb | (b) fission bomb |
| 3. Hydrogen bomb | (c) Nagasaki |
| 4. Atom bomb | (d) Hiroshima |
| i. Solubility of $KNO _3$ | (a) decreases with increase in temperature |
| ii. The solubility of CaO | (b) increases with increase in pressure |
| iii. The solubility of oxygen | (c) increases with increase in temperature |
| iv. Solubility of $CO _2$ | (d) more in cold water |
| 1. Neuroglia | (a) Conduct nerve impulses |
| 2. Electrical impulse | (b) Connects the lobe of the cerebellum |
| 3. Pons | (c) Cerebrospinal fluid |
| 4. Brain | (d) Do not conduct nerve impulses |
| 5. Dendrites | (e) Information from the receptor |
| 1. Universal Recipient | (a) Left Atrio Ventricular Valve |
| 2. Blood | (b) Thin and non-elastic cells |
| 3. Thymocytes | (c) Blood group AB |
| 4. Universal Donor | (d) Thick and elastic cells |
| 5. Mitral | (e) Blood group ‘O’ |
| 6. Veins | (f) Blood platelets |
| 7. Arteries | (g) Connective tissue |
| 1. Power | (a) V = IR |
| 2. Joule’s law | (b) ρ=RAl |
| 3. Ohm’s law | (c) P = VI |
| 4. Specific Resistance | (d) I = Qt |
| 5. Electric energy | (e) $H = I^2$ |
| 1. Boyle’s Law | (a) |
| 2. Absolute Scale | (b) V ∝ t |
| 3. Charle’s Law | (c) |
| 4. Boltzmann Constant | (d) V ∝ n |
| 5. Avogadro’s Law | (e) 0 K (zero kelvin) |
| Metal | Ore | Chemical formula |
| 1. Copper | Bauxite | $ZnCO _3$ |
| 2. Aluminium | Haematite | $CuFeS _2$ |
| 3. Iron | Copper pyrite | $Fe _2 O _3$ |
| 4. Zinc | Calamine | $Al _2 O _3 \cdot 2 H _2 O$ |
| i. 22.4 litres | (a) Avogadro Number |
| ii. $6.023 \times 10^{23}$ | (b) Molar volume |
| iii. 2 × vapour density | (c) 1 mole |
| iv. Mass / Atomic mass | (d) Molecular mass |